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THE mums PETERS co, Puonxumon WASNINGTDN, av 04 UNITED STATES PATENT OFFICE.

PETER G. GIROUD, OF NEWVARK, NEW JERSEY, ASSIGNOR TO THE ACCURATE TIME STAMP COMPANY, OF WHEELING, WEST VIRGINIA, AND NEW YORK, N. Y.

TIME-STAMP MOTOR.

SPECIFICATION forming part of Letters Patent No. 522,730, dated July 10,1894.

Application filed April 4, 1893. Serial No. 469,029. (No model.)

To aZZ whom it may concern: designate corresponding parts in all the fig- Be it known that I, PETER G. GIROUD, of ures. Newark, in the county of Essex and State of A A designate the side plates connected New Jersey, have invented a new and useful by stretchers CL. 5 Improvementin Time-Stamp Motors, of which E is the spring barrel containing the spring the following is a specification. for driving the motor proper and B the spring This invention relates to motors for that barrel containing the spring fordriving the class of time stamps which have been termed clock movement. jumping minute time stamps in which the I will first describe the motor train and [0 mechanism for producing the changes of the afterward describe the clock train, explainnnmerals and letters of the stamp remains at ing beforehand that in some cases where the rest except when at the end of every minute pinions are concealed the tops and bottoms its operation takes place rapidly to effect the of their teeth are indicated by two dotted I change for the next minute. The object of concentric circles which will be sufficient to [5 my improvement is to provide a motor for oprender the train intelligible to those skilled crating such a stamp. which shall be more in the art. positive in its action and more durable and On the spring barrel B of the motor there less liable to get out of order than the motors is a toothed wheel I) gearing with and driving hitherto employed for the purpose. a pinion c on the arbor d which also carries 20 In carrying out my invention I use two a wheel e gearing with a pinion f fast upon separate and independent trains of wheel the arbor g and so driving the said arbor. work each driven or actuated by a spring of This arbor g is the arbor from which motion its own, one of said spring-actuated trains beis transmitted to the stamp changing meching the actual motor supplying the power for anism in the same manner as in other time 25 driving the change mechanism, and the other stamps or in any suitable manner. The

being a properly regulated clock movement said arbor g which I will hereinafter speak of which controls the operation of the said moas the driving arbor also carries a wheel h tor by means of a trip which prevents its acthrough which the trip acts to stop the motor tion until the proper time and then permits until the proper time for the change, the said 30 itto act quickly and sufficiently to produce wheel h gearing with a lantern pinioni on the change and afterward stops it again until the arbor j which also carries a wheel 70 gearthe time for making another change. ing with a lantern pinion Z on the arbor m The nature of the improvement will be dewhich carries a lever 12 which constitutes one scribed with reference to the accompanying member of the trip. 5 drawings and its novelty set forth in the On the spring barrel B of the clock there claims. is a toothed wheel 0 gearing with a pinion p Figure 1 represents an elevation of a comon the arbor g which also carries a wheel 1" plete time stamp motor embodying my invengearing with a pinion s on the arbor t. This tion one of the side frames being for the most arbor i also carries a wheel u gearing with a 40 part removed to expose the train of wheels pinion c on the arbor to which also carries a and the trip to view. Figs. 2 and 3 are relantern pinion 0a which constitutes the other 0 spectively face Views of the motor proper and member of the trip and which operates in of the clock movement separated from each connection with the lever'n of the motor train other each figure including its respective porin the manner hereinafter described. The 5 tion of the trip. Fig. 4 represents a plan of arbor w also carries a wheel y gearing with a the trip. Fig.5representsaverticalsectional pinion 2: on the arbor 6 which also carries a View of the regulator of the clock movement wheel 7 which gears with a pinion 8 on the at right angles to Fig. 1. arbor 9 of the escape wheel 10 and so drives Similar letters and numbers of reference theescapement. Thelever 11, pallets 12, balance wheel 18, and hair-spring 14 are shown dotted in Fig. l which also shows a front view of the regulator 15. A side view of the balance wheel 13 and sections of the hair-spring l4: and regulator 15 are also shown in Fig. 5.

The clock train is so regulated that the lantern pinion a: forming one member of the trip and arranged in the train farther'back than the escape wheel turns during every minute a distance corresponding with the interval between the centers of two of its teeth. The lever 42 constituting the other member of the trip which is driven by the motor train, is held, as shown in Fig. 1, by the force of the motor spring in the barrel B, in contact with one of the teeth of the pinion so during the minute intervals between the operations of the stamp changing mechanism, but at the end of each interval the tooth passes away from the point of the said lever and allows it to trip and permits the arbor m of the latter to make nearly a complete revolution which brings it into contact with the next following tooth of the said pinion to be thereby again arrested. During this one revolution of the arbor m and the trip lever, which is performed so quickly as to be hardly visible, the driving arbor 9 moves far enough to eifect the necessary operation of the changing mechanism.

In order that the trip may work with the least possible friction and that the power of the motor train shall not act in opposition to the clock train but on the contrary shall assist the operation of the latter, the direction of the running of the two trains is such that the point of the trip lever 07. and the tooth of the pinion a: with which it is in contact may move in the same direction, as may be tinderstood by reference to the arrows in Figs. 1, 2 and 3. It may be here remarked that owing to this movement in the same direction of the parts of the two members of the trip which are in contact, the motor never comes to an absolutely positive stop during the intervals between the operations of the stamp chang- 1ng mechanism, but the movement which takes place during these intervals is so slight as to be unappreciable, and it is therefore that I have referred. to the motor as stopping or being at rest during those intervals.

In order that greater security of adj ust-v ment may be obtained for the regulator of the clock train so that it may not be disturbed by the jarring consequent upon the jumping of the motor train as is liable to be the case with a regulator which depends upon friction alone to keep it in adjustment I not only provide the yoke 15 of the regulator with the usual central friction clamp as shown at 16 in Fig. 5 but I provide on the front plate A an arc-formed notched rack 17 as shown in Fig. 1, the notches of said rack being formed by shallow radial indentations made directly in the said plate, and I provide the lower arm of the yoke .15 with a tooth 18 to engage in said rack, the said arm being sulficiently elastic to permit the tooth 18 to slip from one notch of the rack to another as the necessary lateral movement of the yoke is made to adjust the regulator without any direct pulling of the arm of the yoke from the notches, the engagement of the said tooth with the notches in the rack only being deep enough to secure the regulator in the position to which it has been adjusted.

That I claim as my invention is 1. The combination in a time stamp motor of a motor train and a spring for driving-the same to operate the stamp-changing mechanism, a clock train and a separate spring for driving the same independentlyof the spring of the motor train, and a trip consisting of two members one of which is operated by the motor train and the other by the clock train to stop the motor train during certain intervals of time and to liberate it between said intervals, substantially as herein set forth.

2. The combination in atime stamp motor of a motor train, a clock train separate springs for driving the said trains, and a trip consisting of a pinion in the clock train and a lever in the motor train arranged farther back in said train than the escape wheel, substantially as herein set forth.

3. In combination with a clock movement for controlling a time stamp motor, a regulator having an elastic yoke furnished with a tooth, and a notched rack formed directly on one of the plates of the clock movement for engaging said tooth, substantially as herein set forth.

PETER G. GIROUD. Witnesses:

FREDK. HAYNES, L. M. EGBERT. 

